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研究生:江文松
研究生(外文):Wen-sung Chiang
論文名稱:添加物對BZT陶瓷的阻抗及微波介電特性之影響
論文名稱(外文):Effects of additives on impedance and microwave dielectric properties of BZT ceramic
指導教授:邱碧秀
指導教授(外文):Bi-Shiou Chiou
學位類別:碩士
校院名稱:國立交通大學
系所名稱:電子工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:113
中文關鍵詞:微波陶瓷BZT
外文關鍵詞:microwaveceramicBZT
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微波陶瓷材料已被廣泛用於微波通訊系統中。Ba3(Zn1/3Ta2/3)O9 (BZT)因其有良好微波介電特性而成為常用微波陶瓷材料。本篇論文在研究CuO和B2O3添加物(至2 wt.%)對BZT陶瓷的阻抗及微波介電特性之影響。BZT陶瓷的燒結溫度能有效地從1500℃降至1300℃。添加CuO後之BZT等效電阻率下降、介電係數(εr)提高。添加B2O3後之BZT則能得較低頻率溫度係數(τf )。品質因子(Q × f)和添加量有緊密關連,在添加1 wt.% CuO或1 wt.% B2O3時能達最大值。

Microwave ceramic materials are widely used in microwave communication systems. The Ba3(Zn1/3Ta2/3)O9 (BZT) is a common microwave ceramic because of its good microwave dielectric properties. The effects of CuO and B2O3 additives (up to 2 wt.%) on the impedance and microwave dielectric properties of BZT ceramics are investigated. The sintering temperature of BZT ceramics can be effectively reduced from 1500 to 1300℃. With CuO additives, the effective resistance of BZT reduced and dielectric constant (εr) increased. Smaller values of the temperature coefficient of resonant frequency (τf ) are obtained for BZT ceramics with B2O3 additives. The quality factors (Q × f) are strongly dependent upon the amount of additives and reach maximum with 1 wt.% CuO or 1 wt.% B2O3 additives.

謝誌 I
目錄 II
圖目錄 IV
表目錄 X
第一章 緒論 1
1-1 介電陶瓷材料之簡介 1
1-2 介電陶瓷材料之基本特性 2
1-3 介電陶瓷材料於無線通訊上之應用 2
1-4 高頻低損耗理論 3
1-5 低溫可燒結高頻低損失陶瓷材料 5
1-6 本研究的目的 6
第二章 文獻回顧 11
2-1 微波陶瓷材料 11
2-1-1 介電材料之需求 11
2-1-2 微波陶瓷材料的重要群組 12
2-2 鈣鈦礦結構 13
2-3 Ba(Zn1/3Ta2/3)O3 system 15
第三章 實驗步驟及量測技術 26
3-1 試片製備 26
3-2 阻抗分析 28
3-3 微波量測 29
3-3-1 量測理論 29
3-3-2 介電常數εr的計算 30
3-3-3 介電損耗參數tan δ的計算 30
3-3-4 測量系統 31
3-3-5 待測試片尺寸規格 31
3-3-6 測量步驟 32
第四章 結果與討論 36
4-1 BZT之結構分析 36
4-1-1 不同燒結時間之結構分析 36
4-1-2 不同燒結溫度之結構分析 39
4-1-3 各種燒結條件之比較 43
4-2 BZT之頻譜分析 45
4-2-1 不同燒結時間之頻率響應 45
4-2-2 不同燒結溫度之頻率響應 55
4-3 BZT之微波性質 59
4-3-1 頻率溫度係數 59
4-3-2 不同燒結時間之微波性質 61
4-3-3 不同燒結溫度之微波性質 64
4-3-4 不同燒結條件之微波特性比較 67
4-4 CuO添加之影響 69
4-4-1 結構分析 69
4-4-2 頻率響應 73
4-4-3 微波性質 80
4-4-4 BZT添加CuO之影響與文獻比較 82
4-5 B2O3添加之影響 84
4-5-1 結構分析 84
4-5-2 頻率響應 88
4-5-3 微波性質 94
4-5-4 BZT添加B2O3之影響與文獻比較 96
第五章 結論 98
參考文獻 105

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